CHAPTER 79
PAGE 3
MAINTENANCE MANUAL EXTRA 300/SC
PAGE DATE: 1. August 2014
79-00-00 GENERAL
The EXTRA 300/SC is equipped with a modification of a
Christen Inverted Oil System (CHRISTEN 801 series).
Maintenance work or overhaul of the this system requires
consultation to the manufacturer. (Refer to Lycoming
Operaton and Installation Manual, see Chapter 01).
Additionally the lubrication system of the EXTRA 300/SC
has a single oil cooler which is connected to the engine by
flexible tubing.
Description and Operation
The standard Christen 801 Inverted Oil System is a kit-form
accessory for Lycoming aircraft engines which permits
normal engine lubrication, with minimal oil loss, during
aerobatic flight. When installed, it becomes a self-contained
extension of the normal aircraft engine oil and breather
systems. As the system control valves are gravity-operated,
no connection to aircraft power sources is required (Refer
to Figure 1 and 2).
The system works in all inverted and negative-g flight condi-
tions and is particular suited to high-performance aircraft
used for unlimited-class aerobatic competitions.
The need for modification of the standard Christen 801
Inverted Oil System results from installation requirements
for different system components of the Lycoming engine.
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